Forum GeometricorumA Journal on Classical Euclidean Geometry and Related Areas Short Title: Forum Geom. Publisher: Florida Atlantic University, Department of Mathematical Sciences, Boca Raton, FL ISSN: 1534-1178/e Online: https://forumgeom.fau.edu/index1.html Comments: Journal; Indexed cover-to-cover; Published electronic only as of Vol. 1 (2001). This journal is available open access. Documents Indexed: 591 Publications (since 2001) References Indexed: 75 Publications with 519 References. all top 5 Latest Issues 19 (2019) 18 (2018) 17 (2017) 16 (2016) 15 (2015) 14 (2014) 13 (2013) 12 (2012) 11 (2011) 10 (2010) 9 (2009) 8 (2008) 7 (2007) 6 (2006) 5 (2005) 4 (2004) 3 (2003) 2 (2002) 1 (2001) all top 5 Authors 30 Dergiades, Nikolaos 27 van Lamoen, Floor 24 Yiu, Paul Y. H. 20 Pamfilos, Paris 16 Josefsson, Martin 15 Okumura, Hiroshi 14 Ehrmann, Jean-Pierre 14 Gibert, Bernard 13 García Capitán, Francisco Javier 12 Kimberling, Clark H. 10 Hung, Tran Quang 9 Hajja, Mowaffaq 9 Lucca, Giovanni 8 Danneels, Eric 8 Myakishev, Alexei 8 Nagydobai Kiss, Sándor 8 Nicollier, Grégoire 7 Hofstetter, Kurt 6 Bataille, Michel 6 Heß, Albrecht 6 Mammana, Maria Flavia 6 Pohoata, Cosmin 6 Sastry, K. R. S. 6 Suceavă, Bogdan Dragos 6 Watanabe, Masayuki 5 Alperin, Roger Charles 5 Bui, Quang Tuan 5 Čerin, Zvonko Tomislav 5 Emelyanov, Lev 5 Nguyen Minh Ha 5 Oxman, Victor 5 Pennisi, Mario 5 Shattuck, Mark A. 5 Smith, Geoff C. 5 Thas, Charles 5 Weise, Gotthard 4 Abu-Saymeh, Sadi 4 Apostol, Tom M. 4 Atzema, Eisso J. 4 Boskoff, Wladimir-Georges 4 Bradley, Christopher J. 4 García, Emmanuel Antonio José 4 Goehl, John F. jun. 4 Grinberg, Darij 4 Liu, Shao-Cheng 4 Micale, Biagio 4 Mnatsakanian, Mamikon A. 4 Salazar, Juan Carlos 4 Stevanović, Milorad R. 3 Christodoulou, Dimitris M. 3 Connelly, Harold 3 Nguyen Tien Dung 3 Emel’yanova, Tatiana Veniaminovna 3 Evans, Lawrence S. 3 Evers, Manfred 3 Hatzipolakis, Antreas P. 3 Hoehn, Larry 3 Holshouser, Arthur L. 3 Mansour, Toufik 3 Nguyen, Khoa Lu 3 Oai, Dao Thanh 3 Reiter, Harold Braun 3 Scimemi, Benedetto 3 Soldatos, Gerasimos Theodore 3 Unger, James Marshall 3 Vickers, Glenn T. 3 Vonk, Jan B. 3 Zhou, Li 2 Alsina, Claudi 2 Anghel, Nicolae 2 Ayme, Jean-Louis 2 Azarian, Mohammad K. 2 Bencze, Mihaly 2 Bialostocki, Arie 2 Bosch, Robert M. 2 Celli, Martin 2 Chipalkatti, Jaydeep V. 2 Dergiades, Nikolas 2 Donnelly, John B. 2 Donolato, Cesare 2 Dung, Nguyen Thanh 2 Fisher, J. Chris 2 Fraivert, David 2 Gelisgen, Ozcan 2 Gensane, Thierry 2 Gévay, Gábor E. 2 Herrera, Blas 2 Honvault, Pascal 2 Hudelson, Matthew G. 2 Jackson, Frank M. 2 Liebscher, Dierck-Ekkehard 2 Liebscher, Stefan 2 Lim, Sung Hyun 2 Lucero, Jorge C. 2 MacLeod, Allan J. 2 Marinescu, Dan Ştefan 2 Markov, Lubomir P. 2 Minevich, Igor 2 Molchanov, Stanislav Alekseevich 2 Monea, Mihai ...and 228 more Authors all top 5 Fields 585 Geometry (51-XX) 21 Convex and discrete geometry (52-XX) 8 Number theory (11-XX) 8 Algebraic geometry (14-XX) 7 History and biography (01-XX) 3 Dynamical systems and ergodic theory (37-XX) 3 Computer science (68-XX) 3 Mathematics education (97-XX) 2 Real functions (26-XX) 2 Differential geometry (53-XX) 1 General and overarching topics; collections (00-XX) 1 Measure and integration (28-XX) 1 Functions of a complex variable (30-XX) 1 Special functions (33-XX) 1 Mechanics of particles and systems (70-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 202 Publications have been cited 394 times in 247 Documents Cited by ▼ Year ▼ An elementary proof of the isoperimetric inequality. Zbl 1025.52009Dergiades, Nikolaos 8 2002 Non-Euclidean versions of some classical triangle inequalities. Zbl 1247.51012Svrtan, Dragutin; Veljan, Darko 8 2012 Integral right triangle and rhombus pairs with a common area and a common perimeter. Zbl 1335.51021Chern, Shane 8 2016 More characterizations of tangential quadrilaterals. Zbl 1222.51011Josefsson, Martin 7 2011 Characterizations of orthodiagonal quadrilaterals. Zbl 1242.51009Josefsson, Martin 7 2012 Characterizations of trapezoids. Zbl 1300.51007Josefsson, Martin 7 2013 An extension of triangle constructions from located points. Zbl 1168.51302Connelly, Harold 6 2009 A purely synthetic proof of the Droz-Farny line theorem. Zbl 1078.51019Ayme, Jean-Louis 6 2004 Signed distances and the Erdős-Mordell inequality. Zbl 1071.51007Dergiades, Nikolaos 6 2004 A visual proof of the Erdős-Mordell inequality. Zbl 1123.51024Alsina, Claudi; Nelsen, Roger B. 6 2007 Heron triangle and rhombus pairs with a common area and a common perimeter. Zbl 1381.51013Zhang, Yong; Peng, Jinyao 6 2017 Similar metric characterizations of tangential and extangential quadrilaterals. Zbl 1247.51011Josefsson, Martin 6 2012 A strengthened version of the Erdős-Mordell inequality. Zbl 1354.51019Thanh Oai Dao; Nguyen Tien Dung; Pham Ngoc Mai 5 2016 Orthocorrespondence and orthopivotal cubics. Zbl 1025.51021Gibert, Bernard 5 2002 On the derivative of a vertex polynomial. Zbl 1126.51014Parish, James L. 4 2006 Integral triangles and trapezoids pairs with a common area and a common perimeter. Zbl 1432.51018Zhang, Yong; Peng, Junyao; Wang, Jiamin 4 2018 Brahmagupta quadrilaterals. Zbl 1027.51017Sastry, K. R. S. 4 2002 Bicentric pairs of points and related triangle centers. Zbl 1028.51019Kimberling, Clark 4 2002 On the construction of regular polygons and generalized napoleon vertices. Zbl 1181.51020Vartziotis, Dimitris; Wipper, Joachim 4 2009 Convolution filters for triangles. Zbl 1287.51014Nicollier, Grégoire 4 2013 On a construction of Hagge. Zbl 1162.51010Bradley, Christopher; Smith, Geoff C. 3 2007 A short trigonometric proof of the Steiner-Lehmus theorem. Zbl 1163.51308Hajja, Mowaffaq 3 2008 A short proof of Lemoine’s theorem. Zbl 1163.51312Pohoata, Cosmin 3 2008 A condition for a circumscriptible quadrilateral to be cyclic. Zbl 1163.51309Hajja, Mowaffaq 3 2008 Stronger forms of the Steiner-Lehmus theorem. Zbl 1163.51007Hajja, Mowaffaq 3 2008 The Poncelet pencil of rectangular hyperbolas. Zbl 1187.51011Alperin, Roger C. 3 2010 Further inequalities of Erdős-Mordell type. Zbl 1068.51019Janous, Walther 3 2004 Sawayama and Thébault’s theorem. Zbl 1073.51007Ayme, Jean-Louis 3 2003 On the geometry of equilateral triangles. Zbl 1119.51014Sándor, József 3 2005 The locations of triangle centers. Zbl 1122.51018Bradley, Christopher J.; Smith, Geoff C. 3 2006 On two remarkable lines related to a quadrilateral. Zbl 1129.51012Myakishev, Alexei 3 2006 Maximal area of a bicentric quadrilateral. Zbl 1258.51011Josefsson, Martin 3 2012 An extension of Miquel’s six-circles theorem. Zbl 1383.51017Gévay, Gábor 3 2018 Napoleon-like configurations and sequences of triangles. Zbl 1022.51015Ziv, Barukh 3 2002 On the construction of a triangle from the feet of its angle bisectors. Zbl 1177.51019Ustinov, Alexey V. 3 2009 Reciprocal Jacobi triangles and the McCay cubic. Zbl 1322.51010Vickers, Glenn T. 3 2015 Properties of equidiagonal quadrilaterals. Zbl 1301.51020Josefsson, Martin 3 2014 Dao’s theorem on six circumcenters associated with a cyclic hexagon. Zbl 1301.51017Dergiades, Nikolaos 3 2014 A purely synthetic proof of Dao’s theorem on six circumcenters associated with a cyclic hexagon. Zbl 1302.51010Cohl, Telv 3 2014 On the coincidences of Pascal lines. Zbl 1335.51029Chipalkatti, Jaydeep 3 2016 Another proof of the Erdős-Mordell theorem. Zbl 0986.51027Lee, Hojoo 3 2001 Heron triangles: A Gergonne-cevian-and-median perspective. Zbl 0986.51030Sastry, K. R. S. 3 2001 The associated harmonic quadrilateral. Zbl 1284.51017Pamfilos, Paris 3 2014 A simple vector proof of Feuerbach’s theorem. Zbl 1284.51018Scheer, Michael J. G. 3 2011 Inversions in an ellipse. Zbl 1295.51024Ramírez, José L. 3 2014 About a strengthened version of Erdős-Mordell inequality. Zbl 1373.51011Marinescu, Dan Stefan; Monea, Mihai 3 2017 Simple relations regarding the Steiner inellipse of a triangle. Zbl 1222.51008Scimemi, Benedetto 2 2010 Orthic quadrilaterals of a convex quadrilateral. Zbl 1211.51009Mammana, Maria Flavia; Micale, Biagio; Pennisi, Mario 2 2010 Calculations concerning the tangent lengths and tangency chords of a tangential quadrilateral. Zbl 1202.51015Josefsson, Martin 2 2010 Heronian triangles whose areas are integer multiples of their perimeters. Zbl 1162.51007Markov, Lubomir 2 2007 Periodic billiard trajectories in polyhedra. Zbl 1185.37093Bedaride, Nicolas 2 2008 On the centroids of polygons and polyhedra. Zbl 1163.51311Mammana, Maria Flavia; Micale, Biagio; Pennisi, Mario 2 2008 Characterizations of tangential quadrilaterals. Zbl 1168.51004Minculete, Nicusor 2 2009 A maximal parallelogram characterization of ovals having circles as orthoptic curves. Zbl 1194.51015Anghel, Nicolae 2 2010 A projective generalization of the Droz-Farny line theorem. Zbl 1076.51008Ehrmann, Jean-Pierre; van Lamoen, Floor 2 2004 A simple construction of a triangle from its centroid, incenter, and a vertex. Zbl 1069.51014Danneels, Eric 2 2005 Extreme areas of triangles in {P}oncelet’s closure theorem. Zbl 1074.51009Radić, Mirko 2 2004 Statics and the moduli space of triangles. Zbl 1119.51017Smith, Geoff C. 2 2005 Proof by picture: products and reciprocals of diagonal length ratios in the regular polygon. Zbl 1119.51022Fontaine, Anne; Hurley, Susan 2 2006 A theorem by Giusto Bellavitis on a class of quadrilaterals. Zbl 1133.51010Atzema, Eisso J. 2 2006 Construction of triangle from a vertex and the feet of two angle bisectors. Zbl 1120.51008Connelly, Harold; Dergiades, Nikolaos; Ehrmann, Jean-Pierre 2 2007 A proof of the butterfly theorem using the similarity factor of the two wings. Zbl 1373.51008Celli, Martin 2 2016 On a new generalization of the Droz-Farny line. Zbl 1362.51010Letrouit, Cyril 2 2016 How to compute a triangle with prescribed lengths of its internal angle bisectors. Zbl 1362.51007Heindl, Gerhard 2 2016 Circle chains inscribed in symmetrical lenses and integer sequences. Zbl 1362.51011Lucca, Giovanni 2 2016 Properties of a Pascal points circle in a quadrilateral with perpendicular diagonals. Zbl 1390.51009Fraivert, David 2 2017 Areas and shapes of planar irregular polygons. Zbl 1382.51012Garza-Hume, C. E.; Jorge, Maricarmen C.; Olvera, Arturo 2 2018 Loci related to variable flanks. Zbl 1024.51016Čerin, Zvonko 2 2002 Geometry and group structures of some cubics. Zbl 1027.14015Lang, Fred 2 2002 Conic homographies and bitangent pencils. Zbl 1177.51021Pamfilos, Paris 2 2009 The perpendicular bisector construction, isoptic point and the Simson line of a quadrilateral. Zbl 1244.51006Radko, Olga; Tsukerman, Emmanuel 2 2012 Triangles with given incircle and centroid. Zbl 1222.51012Pamfilos, Paris 2 2011 Perspective isoconjugate triangle pairs, Hofstadter pairs, and crosssums on the nine-point circle. Zbl 1213.51014Moses, Peter J. C.; Kimberling, Clark 2 2011 A new proof of Yun’s inequality for bicentric quadrilaterals. Zbl 1242.51010Josefsson, Martin 2 2012 Sherman’s fourth side of a triangle. Zbl 1252.51009Yiu, Paul 2 2012 Do dogs play with rulers and compasses? Zbl 1339.51011Zhou, Li 2 2015 Optimal packings of two ellipses in a square. Zbl 1303.52008Gensane, Thierry; Honvault, Pascal 2 2014 From electrostatic potentials to yet another triangle center. Zbl 1309.51005Abraham, Hrvoje; Kovac, Vjekoslav 2 2015 Bounds for elements of a triangle expressed by \(R, r,\) and \(s\). Zbl 1315.51012Birsan, Temistocle 2 2015 Some remarks on a Sangaku from Chiba. Zbl 1333.51007Pamfilos, Paris 2 2015 Wernick’s list: a final update. Zbl 1335.51002Schreck, Pascal; Mathis, Pascal; Marinkovic, Vesna; Janicic, Predrag 2 2016 Regular polytopic distances. Zbl 1341.51041Park, Poo-Sung 2 2016 A proof of the butterfly theorem using Ceva’s theorem. Zbl 1341.51025Donolato, Cesare 2 2016 A quadrilateral half-turn theorem. Zbl 1341.51021Minevich, Igor; Morton, Patrick 2 2016 Regular polygons and the golden section. Zbl 1344.51002Paunić, Djura; Yiu, Paul 2 2016 Friendship among triangle centers. Zbl 0986.51023van Lamoen, Floor 2 2001 On the Fermat geometric problem. Zbl 1284.51012Čerin, Zvonko 2 2013 On polygons admitting a Simson line as discrete analogs of parabolas. Zbl 1282.51013Tsukerman, Emmanuel 2 2013 The area of a bicentric quadrilateral. Zbl 1283.51017Josefsson, Martin 2 2011 The lemniscatic chessboard. Zbl 1284.33015Langer, Joel C.; Singer, David A. 2 2011 Rational Steiner porism. Zbl 1287.51002Yiu, Paul 2 2011 Coincidence of centers for scalene triangles. Zbl 1162.51311Abu-Saymeh, Sadi; Hajja, Mowaffaq 1 2007 On the diagonals of a cyclic quadrilateral. Zbl 1162.51303Alsina, Claudi; Nelsen, Roger B. 1 2007 Some triangle centers associated with the excircles. Zbl 1162.51314Dosa, Tibor 1 2007 Another verification of Fagnano’s theorem. Zbl 1162.51307Holland, Finbarr 1 2007 How pivotal isocubics intersect the circumcircle. Zbl 1162.51011Gibert, Bernard 1 2007 A simple ruler and rusty compass construction of the regular pentagon. Zbl 1163.51314Hofstetter, Kurt 1 2008 An inequality involving the angle bisectors and an interior point of a triangle. Zbl 1163.51316Jiang, Wei-Dong 1 2008 Another variation on the Steiner-Lehmus theme. Zbl 1163.51004Abu-Saymeh, Sadi; Hajja, Mowaffaq; ShahAli, Hassan Ali 1 2008 A simple compass-only construction of the regular pentagon. Zbl 1163.51315Hofstetter, Kurt 1 2008 Integer sequences and circle chains inside a hyperbola. Zbl 1415.51033Lucca, Giovanni 1 2019 Integral triangles and trapezoids pairs with a common area and a common perimeter. Zbl 1432.51018Zhang, Yong; Peng, Junyao; Wang, Jiamin 4 2018 An extension of Miquel’s six-circles theorem. Zbl 1383.51017Gévay, Gábor 3 2018 Areas and shapes of planar irregular polygons. Zbl 1382.51012Garza-Hume, C. E.; Jorge, Maricarmen C.; Olvera, Arturo 2 2018 Pairs of congruent-like quadrilaterals that are not congruent. Zbl 1432.51015Anatriello, Giuseppina; Laudano, Francesco; Vincenzi, Giovanni 1 2018 A curvature invariant inspired by Leonhard Euler’s inequality \(R\geq 2r\). Zbl 1397.53011Brubaker, Nicholas D.; Camero, Jasmine; Rocha Rocha, Oscar; Soto, Roberto; Suceavă, Bogdan D. 1 2018 A model of continuous plane geometry that is nowhere geodesic. Zbl 1398.51027Donnelly, John 1 2018 Is the mystery of Morley’s trisector theorem resolved? Zbl 1398.51030Shahni Karamzadeh, Omid Ali 1 2018 The relativity of conics and circles. Zbl 1454.51012Liebscher, Stefan; Liebscher, Dierck-E. 1 2018 Heron triangle and rhombus pairs with a common area and a common perimeter. Zbl 1381.51013Zhang, Yong; Peng, Jinyao 6 2017 About a strengthened version of Erdős-Mordell inequality. Zbl 1373.51011Marinescu, Dan Stefan; Monea, Mihai 3 2017 Properties of a Pascal points circle in a quadrilateral with perpendicular diagonals. Zbl 1390.51009Fraivert, David 2 2017 Side lengths of Morley triangles and tetrahedra. Zbl 1366.51005Svrtan, Dragutin; Veljan, Darko 1 2017 A simple synthetic proof of Lemoine’s theorem. Zbl 1362.51008Hung, Tran Quang 1 2017 Another simple construction of the golden section with equilateral triangles. Zbl 1362.51027Hung, Tran Quang 1 2017 Do dogs know the bifurcation locus? Zbl 1362.51022Zhou, Li 1 2017 Circle chains inscribed in symmetrical lunes and integer sequences. Zbl 1362.51013Lucca, Giovanni 1 2017 The golden ratio and regular polygons. Zbl 1362.51029Pietsch, Manfred 1 2017 The periambic constellation: altitudes, perpendicular bisectors, and other radical axes in a triangle. Zbl 1381.51010Jones, Dixon J. 1 2017 Orthopoles, flanks, and Vecten points. Zbl 1384.51027Zaharinov, Todor 1 2017 A cevian locus and the geometric construction of a special elliptic curve. Zbl 1381.51019Minevich, Igor; Morton, Patrick 1 2017 On the circumscribing ellipse of three concentric ellipses. Zbl 1381.51016Lefkaditis, George E.; Toulias, Thomas L.; Markatis, Stelios 1 2017 On the elementary single-fold operations of origami: reflections and incidence constraints on the plane. Zbl 1367.51021Lucero, Jorge C. 1 2017 New interpolation inequalities to Euler’s \(R\geq 2r\). Zbl 1377.51010Andrica, Dorin; Marinescu, Dan-Stefan 1 2017 Another simple construction of the golden ratio in an isosceles triangle. Zbl 1368.51014Hung, Tran Quang 1 2017 Integral right triangle and rhombus pairs with a common area and a common perimeter. Zbl 1335.51021Chern, Shane 8 2016 A strengthened version of the Erdős-Mordell inequality. Zbl 1354.51019Thanh Oai Dao; Nguyen Tien Dung; Pham Ngoc Mai 5 2016 On the coincidences of Pascal lines. Zbl 1335.51029Chipalkatti, Jaydeep 3 2016 A proof of the butterfly theorem using the similarity factor of the two wings. Zbl 1373.51008Celli, Martin 2 2016 On a new generalization of the Droz-Farny line. Zbl 1362.51010Letrouit, Cyril 2 2016 How to compute a triangle with prescribed lengths of its internal angle bisectors. Zbl 1362.51007Heindl, Gerhard 2 2016 Circle chains inscribed in symmetrical lenses and integer sequences. Zbl 1362.51011Lucca, Giovanni 2 2016 Wernick’s list: a final update. Zbl 1335.51002Schreck, Pascal; Mathis, Pascal; Marinkovic, Vesna; Janicic, Predrag 2 2016 Regular polytopic distances. Zbl 1341.51041Park, Poo-Sung 2 2016 A proof of the butterfly theorem using Ceva’s theorem. Zbl 1341.51025Donolato, Cesare 2 2016 A quadrilateral half-turn theorem. Zbl 1341.51021Minevich, Igor; Morton, Patrick 2 2016 Regular polygons and the golden section. Zbl 1344.51002Paunić, Djura; Yiu, Paul 2 2016 Minimal proof of a generalized Droz-Farny theorem. Zbl 1362.51016Nicollier, Grégoire 1 2016 On the existence of a triangle with prescribed bisector lengths. Zbl 1362.51017Osinkin, Sergey F. 1 2016 Apollonian circumcircles of IFS fractals. Zbl 1352.51016Vass, József 1 2016 Similarities on a sphere. Zbl 1352.51014Honvault, Pascal 1 2016 Isogonal conjugates in a tetrahedron. Zbl 1335.51020Sadek, Jawad; Bani-Yaghoub, Majid; Rhee, Noah H. 1 2016 On the diagonal and inscribed pentagons of a pentagon. Zbl 1341.51029Pamfilos, Paris 1 2016 Septic equations are solvable by 2-fold origami. Zbl 1341.51027König, Joachim; Nedrenco, Dmitri 1 2016 A recursive formula for the circumradius of the \(n\)-simplex. Zbl 1341.51036Kobayashi, Kenta 1 2016 Some golden sections in the equilateral and right isosceles triangles. Zbl 1347.51005Dao, Thanh Oai 1 2016 Some collinearities in the heptagonal triangle. Zbl 1347.51001Altintaş, Abdilkadir 1 2016 A distance property of the Feuerbach point and its extension. Zbl 1347.51004Kiss, Sandor N. 1 2016 Reciprocal Jacobi triangles and the McCay cubic. Zbl 1322.51010Vickers, Glenn T. 3 2015 Do dogs play with rulers and compasses? Zbl 1339.51011Zhou, Li 2 2015 From electrostatic potentials to yet another triangle center. Zbl 1309.51005Abraham, Hrvoje; Kovac, Vjekoslav 2 2015 Bounds for elements of a triangle expressed by \(R, r,\) and \(s\). Zbl 1315.51012Birsan, Temistocle 2 2015 Some remarks on a Sangaku from Chiba. Zbl 1333.51007Pamfilos, Paris 2 2015 Points on a line that maximize and minimize the ratio of the distances to two given points. Zbl 1322.51008Bialostocki, Arie; Ely, Rob 1 2015 Circle incidence theorems. Zbl 1335.51015Fisher, J. Chris; Schröder, Eberhard M.; Stevens, Jan 1 2015 The golden section in the inscribed square of an isosceles right triangle. Zbl 1309.51007Hung, Tran Quang 1 2015 Two conjectures of Victor Thébault linking tetrahedra with quadrics. Zbl 1315.51010Herrera, Blas 1 2015 Equilateral triangles and Kiepert perspectors in complex numbers. Zbl 1315.51011Oai, Dao Thanh 1 2015 Reflections on Poncelet’s pencil. Zbl 1315.51008Alperin, Roger C. 1 2015 Some theorems on polygons with one-line spectral proofs. Zbl 1329.51012Nicollier, Grégoire 1 2015 Properties of equidiagonal quadrilaterals. Zbl 1301.51020Josefsson, Martin 3 2014 Dao’s theorem on six circumcenters associated with a cyclic hexagon. Zbl 1301.51017Dergiades, Nikolaos 3 2014 A purely synthetic proof of Dao’s theorem on six circumcenters associated with a cyclic hexagon. Zbl 1302.51010Cohl, Telv 3 2014 The associated harmonic quadrilateral. Zbl 1284.51017Pamfilos, Paris 3 2014 Inversions in an ellipse. Zbl 1295.51024Ramírez, José L. 3 2014 Optimal packings of two ellipses in a square. Zbl 1303.52008Gensane, Thierry; Honvault, Pascal 2 2014 Symbolic substitution has a geometric meaning. Zbl 1300.51016Evers, Manfred 1 2014 The Cevian Simson transformation. Zbl 1303.51008Gibert, Bernard 1 2014 A note on reflections. Zbl 1303.51007García, Emmanuel Antonio José 1 2014 A gallery of conics by five elements. Zbl 1305.51015Pamfilos, Paris 1 2014 On a circle containing the incenters of tangential quadrilaterals. Zbl 1306.51006Hess, Albrecht 1 2014 Angle and circle characterizations of tangential quadrilaterals. Zbl 1293.51010Josefsson, Martin 1 2014 Dynamics of the nested triangles formed by the tops of the perpendicular bisectors. Zbl 1290.51016Nicollier, Grégoire 1 2014 A note on the Fermat-Torricelli point of a class of polygons. Zbl 1291.51014Mortici, Cristinel 1 2014 Characterizations of trapezoids. Zbl 1300.51007Josefsson, Martin 7 2013 Convolution filters for triangles. Zbl 1287.51014Nicollier, Grégoire 4 2013 On the Fermat geometric problem. Zbl 1284.51012Čerin, Zvonko 2 2013 On polygons admitting a Simson line as discrete analogs of parabolas. Zbl 1282.51013Tsukerman, Emmanuel 2 2013 Bicentric quadrilaterals through inversion. Zbl 1284.51016Hess, Albrecht 1 2013 Pedal polygons. Zbl 1287.51009Ferrarello, Daniela; Mammana, Maria Flavia; Pennisi, Mario 1 2013 Intersecting equilateral triangles. Zbl 1282.51012Nielsen, Colleen; Powers, Christa 1 2013 A vector-based proof of Morley’s trisector theorem. Zbl 1282.51007Donolato, Cesare 1 2013 Non-Euclidean versions of some classical triangle inequalities. Zbl 1247.51012Svrtan, Dragutin; Veljan, Darko 8 2012 Characterizations of orthodiagonal quadrilaterals. Zbl 1242.51009Josefsson, Martin 7 2012 Similar metric characterizations of tangential and extangential quadrilaterals. Zbl 1247.51011Josefsson, Martin 6 2012 Maximal area of a bicentric quadrilateral. Zbl 1258.51011Josefsson, Martin 3 2012 The perpendicular bisector construction, isoptic point and the Simson line of a quadrilateral. Zbl 1244.51006Radko, Olga; Tsukerman, Emmanuel 2 2012 A new proof of Yun’s inequality for bicentric quadrilaterals. Zbl 1242.51010Josefsson, Martin 2 2012 Sherman’s fourth side of a triangle. Zbl 1252.51009Yiu, Paul 2 2012 The maltitude construction in a convex noncyclic quadrilateral. Zbl 1258.51010Mammana, Maria Flavia 1 2012 A highway from Heron to Brahmagupta. Zbl 1244.51005Hess, Albrecht 1 2012 Synthetic proofs of two theorems related to the Feuerbach point. Zbl 1243.51005Nguyen, Minh Ha; Nguyen, Pham Dat 1 2012 More characterizations of tangential quadrilaterals. Zbl 1222.51011Josefsson, Martin 7 2011 A simple vector proof of Feuerbach’s theorem. Zbl 1284.51018Scheer, Michael J. G. 3 2011 Triangles with given incircle and centroid. Zbl 1222.51012Pamfilos, Paris 2 2011 Perspective isoconjugate triangle pairs, Hofstadter pairs, and crosssums on the nine-point circle. Zbl 1213.51014Moses, Peter J. C.; Kimberling, Clark 2 2011 The area of a bicentric quadrilateral. Zbl 1283.51017Josefsson, Martin 2 2011 The lemniscatic chessboard. Zbl 1284.33015Langer, Joel C.; Singer, David A. 2 2011 Rational Steiner porism. Zbl 1287.51002Yiu, Paul 2 2011 Solving Euler’s triangleproblem with Poncelet’s pencil. Zbl 1283.51007Alperin, Roger C. 1 2011 ...and 102 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 304 Authors 10 Hajja, Mowaffaq 7 Kimberling, Clark H. 6 Josefsson, Martin 6 Vincenzi, Giovanni 5 Hung, Tran Quang 5 Liu, Jian 5 Moses, Peter J. C. 5 Reznik, Dan S. 5 Yang, Yunlong 5 Zhang, Yong 4 Laudano, Francesco 4 Nicollier, Grégoire 4 Röschel, Otto 4 Schreck, Pascal 4 Veljan, Darko 3 Abu-Saymeh, Sadi 3 Chipalkatti, Jaydeep V. 3 Garcia, Ronaldo A. 3 Janičić, Predrag 3 Li, Yangcheng 3 Lucca, Giovanni 3 Marinković, Vesna 3 Nagydobai Kiss, Sándor 3 Pamfilos, Paris 3 Stupel, Moshe 3 Tran, Quang Hung 3 Tsukerman, Emmanuel 2 Alafifi, Ghada 2 Anatriello, Giuseppina 2 Andrica, Dorin 2 Bataille, Michel 2 Bosch, Robert M. 2 Donnelly, John B. 2 Fraivert, David 2 Garza-Hume, Clara E. 2 Gévay, Gábor E. 2 Hamdan, Ahmad 2 Horváth, Ákos G. 2 Hungerbuhler, Norbert 2 Jorge, Maricarmen C. 2 Jurkin, Ema 2 Lang, Johann 2 Langer, Joel C. 2 Llibre, Jaume 2 Mathis, Pascal 2 Minevich, Igor 2 Morton, Patrick 2 Nakamura, Hiroaki 2 Ogawa, Hiroyuki 2 Okumura, Hiroshi 2 Olvera, Arturo 2 Sakata, Shigehiro 2 Sánchez-Reyes, Javier 2 Santoprete, Manuele 2 Shattuck, Mark A. 2 Shirali, Shailesh A. 2 Šimić Horvath, Marija 2 Suceavă, Bogdan Dragos 2 Tabachnikov, Serge L. 2 van Lamoen, Floor 2 Vartziotis, Dimitris 2 Vickers, Glenn T. 2 Volenec, Vladimir 2 Wipper, Joachim 2 Wu, Yudong 2 Yuan, Pengfei 2 Zhou, Li 1 Abdesselam, Abdelmalek 1 Açıksöz, Gizem Günel 1 Agnew, Alfonso F. 1 Akopyan, Arseniy V. 1 Al-Momani, Yaqeen 1 Alperin, Roger Charles 1 Alves Garcia, Ronaldo 1 Arnold, Maxim 1 Aste, Marco 1 Asti, Giovanni 1 Asti, Laura 1 Bani-Yaghoub, Majid 1 Banjac, Bojan 1 Barbu, Catalin Ionel 1 Bašić, Nino 1 Başkes, Güneş 1 Beardon, Alan Frank 1 Beban-Brkić, Jelena 1 Bédaride, Nicolas 1 Belbachir, Hacene 1 Blazek, Jiri 1 Bobe, Alexandru 1 Bogoşel, Beniamin 1 Boninsegna, Massimo 1 Boskoff, Wladimir-Georges 1 Bradley, Christopher J. 1 Bruen, Aiden A. 1 Buchholz, Ralph Heiner 1 Campión, María Jesús 1 Carroll, Emily 1 Castillo, Ignacio 1 Catalán, Raquel G. 1 Cekić, Mihajlo ...and 204 more Authors all top 5 Cited in 81 Journals 40 Forum Geometricorum 20 Journal of Geometry 19 The Mathematical Gazette 14 Journal for Geometry and Graphics 8 Elemente der Mathematik 7 American Mathematical Monthly 7 International Journal of Mathematical Education in Science and Technology 7 Discrete & Computational Geometry 6 Mathematics Magazine 6 Beiträge zur Algebra und Geometrie 5 Journal of Number Theory 5 Journal of Inequalities and Applications 4 Journal of Mathematical Inequalities 4 International Electronic Journal of Geometry 3 Mathematische Semesterberichte 3 Archiv der Mathematik 3 Results in Mathematics 3 Aequationes Mathematicae 3 Advances in Geometry 2 Discrete Mathematics 2 Rocky Mountain Journal of Mathematics 2 Functiones et Approximatio. Commentarii Mathematici 2 Proceedings of the American Mathematical Society 2 Journal of Symbolic Computation 2 Linear Algebra and its Applications 2 Mathematical Inequalities & Applications 2 Journal of Integer Sequences 2 Mathematics in Computer Science 2 The College Mathematics Journal 2 Far East Journal of Mathematical Education 1 Bulletin of the Australian Mathematical Society 1 Computers & Mathematics with Applications 1 Communications in Mathematical Physics 1 Computer Methods in Applied Mechanics and Engineering 1 General Relativity and Gravitation 1 Journal of Mathematical Analysis and Applications 1 Nonlinearity 1 Mathematics of Computation 1 The Mathematical Intelligencer 1 Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg 1 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica 1 Annali di Matematica Pura ed Applicata. Serie Quarta 1 Applied Mathematics and Computation 1 Applied Mathematics and Optimization 1 Colloquium Mathematicum 1 Geometriae Dedicata 1 Matematički Vesnik 1 Transactions of the American Mathematical Society 1 Acta Mathematica Hungarica 1 Acta Applicandae Mathematicae 1 International Journal of Approximate Reasoning 1 Science in China. Series A 1 Japan Journal of Industrial and Applied Mathematics 1 Computational Geometry 1 Journal of Global Optimization 1 Journal of Mathematical Imaging and Vision 1 Rad Hrvatske Akademije Znanosti i Umjetnosti. Matematičke Znanosti 1 Turkish Journal of Mathematics 1 Fractals 1 Advances in Applied Clifford Algebras 1 Mathematical Communications 1 PAA. Pattern Analysis and Applications 1 Mechanism and Machine Theory 1 Regular and Chaotic Dynamics 1 Nexus Network Journal 1 Communications of the Korean Mathematical Society 1 Integers 1 Miscelánea Matemática 1 Journal of Systems Science and Complexity 1 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 1 Milan Journal of Mathematics 1 Boletim da Sociedade Paranaense de Matemática. Terceira Série 1 Sibirskie Èlektronnye Matematicheskie Izvestiya 1 International Journal of Number Theory 1 Optimization Letters 1 Advances in Mathematical Physics 1 Formalized Mathematics 1 Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica 1 Annales de l’Institut Henri Poincaré D. Combinatorics, Physics and their Interactions (AIHPD) 1 International Journal of Advances in Applied Mathematics and Mechanics 1 European Journal of Mathematics all top 5 Cited in 34 Fields 183 Geometry (51-XX) 27 Convex and discrete geometry (52-XX) 21 Number theory (11-XX) 13 Differential geometry (53-XX) 12 Computer science (68-XX) 11 Mathematics education (97-XX) 10 Dynamical systems and ergodic theory (37-XX) 9 Algebraic geometry (14-XX) 9 Real functions (26-XX) 8 Combinatorics (05-XX) 7 Numerical analysis (65-XX) 5 Mechanics of particles and systems (70-XX) 4 History and biography (01-XX) 4 Linear and multilinear algebra; matrix theory (15-XX) 3 Field theory and polynomials (12-XX) 3 Functions of a complex variable (30-XX) 3 Probability theory and stochastic processes (60-XX) 3 Relativity and gravitational theory (83-XX) 2 Mathematical logic and foundations (03-XX) 2 Measure and integration (28-XX) 2 Special functions (33-XX) 2 Abstract harmonic analysis (43-XX) 2 Mechanics of deformable solids (74-XX) 2 Quantum theory (81-XX) 2 Operations research, mathematical programming (90-XX) 2 Information and communication theory, circuits (94-XX) 1 General and overarching topics; collections (00-XX) 1 Associative rings and algebras (16-XX) 1 Topological groups, Lie groups (22-XX) 1 Partial differential equations (35-XX) 1 Difference and functional equations (39-XX) 1 Approximations and expansions (41-XX) 1 Manifolds and cell complexes (57-XX) 1 Statistical mechanics, structure of matter (82-XX) Citations by Year